The question is how to get the exact integer 13 when we let
f = 880*2^(1/12)
and let
expr = Log[2^(1/12), f/440]
with no numerics (only exact integers) in both expressions.
It seems that expr should already equal the integer 13 exactly, yet
evaluating expr gives
(12*Log[2*2^(1/12)])/Log[2]
or
Log[8192]/Log[2]
with Simplify[expr], which, while clearly 13 to the eye, still isn't
exactgly 13 on the page.
So how do you get 13 back out of expr, preferably without recourse to
numerics?
Trevor.